<?php
header('Content-type:text/html;charset=utf-8');

//$username = $_POST['username'];
$username = $_POST['username'];
if($username=='admin'){
	echo '用户名不 能是admin';
}else{
	echo '用户名可以注册';
} 
/* if($username=='admin'){
	echo 'false';
}else{
	echo 'true';
} */